Escrowed NFT Merging

How does customization of NFTs normally work?
Projects in the past have offered customization by letting users own the NFTs, but doing all the customization on central servers. On other platforms, when you add an element to land you own in the metaverse or put a wearable on your avatar, you're not actually interacting with the blockchain. Your NFT is on the blockchain, but all of your customization and configuration isn't.
What is Ethlings' new customization technology, Escrowed NFT Merging?
Escrowed NFT Merging is a new capability that actually puts an NFT into escrow while it's combined with another one. When the NFTs are separated, they're redeemed and removed from escrow, being returned back to the rightful owner.

Ethlings act as an escrow container for Wearables in the Ethlings universe. When you put on a wearable, it gives ownership of that wearable to the Ethling while it's worn. That means when you trade the Ethling, all of its wearables will be traded with it. When you remove a piece of clothing, the Wearable is removed from escrow and returned back to you.
Can I trade my Wearable while it's escrowed?
Nope! This ensures compatibility with 3rd party marketplaces like OpenSea. While a Wearable is escrowed on an Ethling, it's not in your wallet. You can trade your Ethling which will include the Wearable in the sale, but you'll need to remove the Wearable in order to trade it as its own individual NFT.